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Diiodomethane
| Diiodomethane |
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| IUPAC name |
Diiodomethane |
| Other names |
Methylene iodide, Methylene diiodide, Methyl diiodide |
| Identifiers |
| CAS number |
75-11-6 |
| PubChem |
6346 |
| EINECS number |
200-841-5 |
| RTECS number |
PA8575000 |
| SMILES |
C(I)I |
| InChI |
InChI=1/CH2I2/c2-1-3/h1H2 |
| Properties |
| Molecular formula |
CH2I2 |
| Molar mass |
267.84 g/mol |
| Appearance |
Light yellow to gold liquid with chloroform-like odour |
| Density |
3.325 g/cm3 |
| Melting point |
6 °C (43 °F)
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| Boiling point |
181 °C (358 °F) (decomp.)
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| Solubility in water |
14 g/l at 20 °C |
| Hazards |
| EU classification |
Harmful (Xn) |
| NFPA 704 |
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| R-phrases |
R20/22 |
| S-phrases |
S26, S27, S36/37/39 |
| Flash point |
113 °C |
Except where noted otherwise, data are given for
materials in their standard state
(at 25 °C, 100 kPa)
Infobox disclaimer and references |
Diiodomethane or methylene iodide is liquid halomethane insoluble in water, soluble in ether and alcohol. It has high refractive index of 1.741. Fresh diiodomethane is a colorless liquid. However, its exposition to light causes it to slowly decompose and deliberate iodine, which colours it brownish.
With its high specific gravity, it is used for the separation of minerals or for determination of specific gravity of mineral particles. Due its uncertain toxicity, it should be replaced with safer heavy liquids. It is also used as a solvent and a chemical intermediate.
See also
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This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Diiodomethane". A list of authors is available in Wikipedia.
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